In-beam γ-ray spectroscopy above Sn100 using the new technique of recoil decay tagging

E. S. Paul*, P. J. Woods, T. Davinson, R. D. Page, P. J. Sellin, C. W. Beausang, R. M. Clark, R. A. Cunningham, S. A. Forbes, D. B. Fossan, A. Gizon, J. Gizon, K. Hauschild, I. M. Hibbert, A. N. James, D. R. Lafosse, I. Lazarus, H. Schnare, J. Simpson, R. WadsworthM. P. Waring

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A novel method of selecting γ-ray transitions in heavy nuclei (A>100) at the proton drip-line has been attempted. The characteristic charged-particle radioactivity of these nuclei (alpha decay, ground-state proton decay, and β-delayed proton emission) has been used to tag γ-ray transitions recorded by the highly efficient Eurogam spectrometer. The Ni58+54Fe and Ni58+58Ni fusion-evaporation reactions, at a beam energy of 240 MeV, have been used to populate specific states of these neutron-deficient nuclei and results are presented for Te108,109, I109, and Xe113, where γ-ray transitions have been identified. In the case of I109, this represents the first observation of γ-rays from a ground-state proton emitter.

Original languageEnglish
Pages (from-to)78-87
Number of pages10
JournalPhysical Review C
Issue number1
Publication statusPublished - 1 Jan 1995

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